Aarhus University Seal

Cluster structures for the A singularity

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

DOI

  • Jenny August
  • ,
  • Man Wai Cheung, University of Tokyo
  • ,
  • Eleonore Faber, University of Leeds
  • ,
  • Sira Gratz
  • Sibylle Schroll, University of Cologne, Norwegian University of Science and Technology

We study a category (Formula presented.) of (Formula presented.) -graded maximal Cohen-Macaulay (MCM) modules over the (Formula presented.) curve singularity and demonstrate that it has infinite type (Formula presented.) cluster combinatorics. In particular, we show that this Frobenius category (or a suitable subcategory) is stably equivalent to the infinite type (Formula presented.) cluster categories of Holm–Jørgensen, Fisher and Paquette–Yıldırım. As a consequence, (Formula presented.) has cluster tilting subcategories modelled by certain triangulations of the (completed) (Formula presented.) -gon. We use the Frobenius structure to extend this further to consider maximal almost rigid subcategories, and show that these subcategories and their mutations exhibit the combinatorics of the completed (Formula presented.) -gon.

Original languageEnglish
JournalJournal of the London Mathematical Society
Volume107
Issue6
Pages (from-to)2121-2149
ISSN0024-6107
DOIs
Publication statusPublished - Jun 2023

Bibliographical note

Publisher Copyright:
© 2023 The Authors. Journal of the London Mathematical Society is copyright © London Mathematical Society.

See relations at Aarhus University Citationformats

ID: 339839313